Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - 1GR-FE ENGINE CONTROL
CHECK OPERATION OF SPEEDOMETER
READ VALUE USING GTS (VEHICLE SPEED)
CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)
CHECK COMBINATION METER ASSEMBLY (+S VOLTAGE)
CHECK COMBINATION METER (SPD SIGNAL OUTPUT WAVEFORM)
CHECK COMBINATION METER ASSEMBLY (SPD SIGNAL INPUT WAVEFORM)
DTC P0500 Vehicle Speed Sensor "A"
DESCRIPTION
The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU. The skid control ECU converts these wheel speed signals into a pulse signal and outputs it to the ECM via the combination meter. The ECM determines the vehicle speed based on the frequency of this pulse signal.
| DTC No. | DTC Detection Condition | Trouble Area |
| P0500 | While the vehicle is being driven, no vehicle speed signal is transmitted to the ECM (2 trip detection logic). | Open or short in speed signal circuit Wheel speed sensor Combination meter assembly ECM Skid control ECU |
MONITOR DESCRIPTION
If there is no vehicle speed signal from the combination meter (SP1) for 5 seconds when the vehicle is being driven, the ECM determines this to be a malfunction of the vehicle speed sensor. The ECM then illuminates the MIL and stores the DTC.
*: Idle fuel-cut is executed when the throttle valve is fully closed and engine speed is over 2500 rpm.
WIRING DIAGRAM
INSPECTION PROCEDURE
- HINT:
- Read freeze frame data using the GTS. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air-fuel ratio was lean or rich, and other data from the time the malfunction occurred.
| 1.CHECK OPERATION OF SPEEDOMETER |
Drive the vehicle and check whether the operation of the speedometer in the combination meter is normal.
- HINT:
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| OK | |
| 2.READ VALUE USING GTS (VEHICLE SPEED) |
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine and ECT / Data List / All Data / Vehicle Speed.
Drive the vehicle.
Read the value displayed on the GTS.
- OK:
- Vehicle speeds displayed on the GTS and speedometer display are equal.
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| OK | ||
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| 3.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM) |
Disconnect the combination meter connector.
Disconnect the ECM connector.
Measure the resistance according the value(s) in the table below.
- Standard Resistance:
for LHD Tester Connection Condition Specified Condition E7-4 (+S) - A38-13 (SPD) Always Below 1 Ω E7-4 (+S) or A38-13 (SPD) - Body ground Always 10 kΩ or higher for RHD Tester Connection Condition Specified Condition E7-4 (+S) - A52-13 (SPD) Always Below 1 Ω E7-4 (+S) or A52-13 (SPD) - Body ground Always 10 kΩ or higher
- HINT:
- If the wire harness has a short, check the speed signal circuit in other systems related to the vehicle speed signal (e.g. tire pressure warning system, audio system, etc.).
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| OK | |
| 4.CHECK COMBINATION METER ASSEMBLY (+S VOLTAGE) |
Disconnect the combination meter assembly connector.
- HINT:
- Disconnect the ECU connectors of other systems related to the speed signal, but do not disconnect the ECM connectors.
Turn the ignition switch to ON.
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Switch Condition Specified Condition E7-4 (+S) - Body ground Ignition switch ON 4.5 to 5.5 V
| *a | Front view of wire harness connector (to Combination Meter Assembly) |
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| OK | |
| 5.CHECK COMBINATION METER (SPD SIGNAL OUTPUT WAVEFORM) |
Remove the combination meter assembly.
Connect the combination meter assembly connector.
Move the shift lever to N.
Jack up the vehicle.
Turn the ignition switch to ON.
Check the voltage between the terminal of the combination meter assembly and body ground while the wheels are turned slowly.
- Standard Voltage:
Tester Connection Condition Specified Condition E7-4 (+S) - Body ground Ignition switch ON
(Wheels turned slowly)Voltage generated intermittently
- HINT:
| *a | Component with harness connected (Combination Meter Assembly) |
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| OK | ||
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| 6.CHECK COMBINATION METER ASSEMBLY (SPD SIGNAL INPUT WAVEFORM) |
Remove the combination meter assembly.
Connect the combination meter assembly connector.
Move the shift lever to N.
Jack up the vehicle.
Turn the ignition switch to ON.
Check the voltage between the terminal of the combination meter assembly and body ground while the wheels are turned slowly.
- Standard Voltage:
Tester Connection Condition Specified Condition E7-3 (SI) - Body ground Ignition switch ON
(Wheels turned slowly)Voltage generated intermittently
- HINT:
- The output voltage fluctuates up and down, similarly to the diagram, when the wheels are turned slowly.
| *a | Component with harness connected (Combination Meter Assembly) |
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| OK | ||
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| 7.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - VSC ACTUATOR WITH ACTUATOR BRACKET ASSEMBLY) |
Disconnect the combination meter assembly connector.
Disconnect the VSC actuator with actuator bracket assembly connector.
Measure the resistance according the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition E7-3 (SI) - A24-12 (SP1) Always Below 1 Ω E7-3 (SI) or A24-12 (SP1) - Body ground Always 10 kΩ or higher
| Result | Proceed to |
| OK (for LHD) | A |
| OK (for RHD) | B |
| NG | C |
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| A | ||
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